[ARC5] Some info on the S-38

K5MYJ macklinbob at gmail.com
Thu Nov 19 19:42:44 EST 2015


LOG 10 is POWER.

LOG 20 is voltage.

If you are measuring voltage -60db is 1/1000th. I.e., 1V down 60db is 1mV.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Leslie Smith" <vk2bcu at operamail.com>
To: <arc5 at mailman.qth.net>
Sent: Thursday, November 19, 2015 4:26 PM
Subject: Re: [ARC5] Some info on the S-38


> Correction:  I wrote that 60dB "down" amounts to one-millionth of the
> signal (or something like that).
> 
> I should have written 60dB "down" amounts to an attenuation of the
> signal by one-million.  The signal is attenuated 10x log(one-million).  
> Anyway, I figure that every-one on this list knows that, and made the
> correction for me already.  -  Les
> 
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